PSD4235G2-90UI STMicroelectronics, PSD4235G2-90UI Datasheet - Page 116

• Manufacturer Part Number: PSD4235G2-90UI
• Description: IC FLASH 4MBIT 90NS 80TQFP
• Manufacturer: STMicroelectronics

Specifications of PSD4235G2-90UI

• Format - Memory: FLASH
• Memory Type: FLASH
• Memory Size: 4M (512K x 8)
• Speed: 90ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP, 80-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-1969

DC and AC parameters
Table 66.
1. Programmed to all zero before erase.
2. The polling status, DQ7, is valid tQ7VQV time units before the data byte, DQ0-DQ7, is valid for reading.
3. DQ7 is DQ15 for Motorola MCU with 16-bit data bus.
Figure 43. Peripheral I/O write timing
116/129
t
t
t
t
t
WHQV3
WHQV2
WHQV1
WHWLO
Q7VQV
Symbol
A / D BUS
ALE/AS
Program, WRITE and Erase times
Flash Program
Flash Bulk Erase
Flash Bulk Erase (not pre-programmed)
Sector Erase (pre-programmed)
Sector Erase (not pre-programmed)
Byte Program
Program / Erase Cycles (per Sector)
Sector Erase timeout
DQ7 Valid to output (DQ7-DQ0) Valid (Data
Polling)
WR
(2)(3)
(1)
(pre-programmed)
ADDRESS
Parameter
tWLQV
(PF)
100,000
Min.
tDVQV (PF)
DATA OUT
DATA OUT
PORT F
Typ.
100
8.5
2.2
10
14
3
1
tWHQZ (PF)
Max.
1200
30
30
30
PSD4235G2
AI05741
cycles
Unit
µs
µs
ns
s
s
s
s
s